93 FJZ80--LandCruiser-- Federal Spec
So a couple of months ago I noticed that some vacuum hoses on my engine were cracked and coming apart. Who knows how long they had been that way. After researching I discovered that these were EGR vacuum hoses-- hoses that go between the EGR vacuum modulator and the intake. At first I was just going to replace the hoses, but after reading a bunch of threads on the damage that the EGR pipe can do the electrical wiring I decided to just "turn off" the EGR by rerouting the hoses.
Basically, I followed this thread:
'94 Code 71, EGR Bypass and redneck technique..
That thread shows how you can "delete" the EGR by just looping one hose back to the EGR vacuum modulator and looping the other hose back to to the intake.
These are pictures from that thread:
Note that I didn't do anything electrical, because my understanding is that on a 93 the EGR system can be deleted without throwing a code.
Well I opened the hood today and noticed that my EGR vacuum modulator had "exploaded" for lack of a better word. The hoses I had looped were blown off, and the hose underneath that goes to the EGR valve was just gone.
The check engine light is not on. I had noticed a smell at one time, but I thought that was just my leaking valve cover gasket dripping on something. I had noticed a lack of power the last time I was pulling a trailer, but I don't know if that was related.
So what happened here? Did my EGR delete cause this? I did see a thread that said this could be caused by bad cats, so maybe this is just a coincidence.
So what should I do here? I really would prefer to keep that EGR system off if I can. But I need it pass the visual inspection when the time comes.
Thanks
Jared
So a couple of months ago I noticed that some vacuum hoses on my engine were cracked and coming apart. Who knows how long they had been that way. After researching I discovered that these were EGR vacuum hoses-- hoses that go between the EGR vacuum modulator and the intake. At first I was just going to replace the hoses, but after reading a bunch of threads on the damage that the EGR pipe can do the electrical wiring I decided to just "turn off" the EGR by rerouting the hoses.
Basically, I followed this thread:
'94 Code 71, EGR Bypass and redneck technique..
That thread shows how you can "delete" the EGR by just looping one hose back to the EGR vacuum modulator and looping the other hose back to to the intake.
These are pictures from that thread:
Note that I didn't do anything electrical, because my understanding is that on a 93 the EGR system can be deleted without throwing a code.
Well I opened the hood today and noticed that my EGR vacuum modulator had "exploaded" for lack of a better word. The hoses I had looped were blown off, and the hose underneath that goes to the EGR valve was just gone.
The check engine light is not on. I had noticed a smell at one time, but I thought that was just my leaking valve cover gasket dripping on something. I had noticed a lack of power the last time I was pulling a trailer, but I don't know if that was related.
So what happened here? Did my EGR delete cause this? I did see a thread that said this could be caused by bad cats, so maybe this is just a coincidence.
So what should I do here? I really would prefer to keep that EGR system off if I can. But I need it pass the visual inspection when the time comes.
Thanks
Jared